Poems Under the Dome // Go to San Francisco's City Hall to celebrate National Poetry Month. It’s an open-mike event, so bring something to recite, or just listen. It’ll be sheer poetry in either case. // DETAILS: Poems Under the Dome, City Hall, San Francisco, April 18, 5:30pm. Cost: FREE

We celebrate Earth Day with renowned natural sound recordist Bernie Krause. He talks about his early career in professional music and how he made the transition to naturalist and bio-acoustitian. Krause will take us on a sonic tour to some of his favorite wilderness areas. He talks about his new book "The Great Animal Orchestra: Finding the Origins of Music in the World's Wild Places." This Sunday 4/21 7 am and on Monday 4/22 9 pm

On today's Your Call we’ll reflect on Earth Day. Environmental journalist Mark Hertsgaard believes that Earth Day is becoming a bland, tired ritual that polluters and politicians have learned to ignore or co-opt. It’s time to reclaim Earth Day and return it to its 1970s roots when millions took to the streets. What will it take to get millions into the streets today? Join us at 10 or email feedback@yourcallradio.org. How would you save Earth Day and the environmental movement? It’s Your Call with Holly Kernan, and you.